the average high temperature in anchorage in january is 21f

the average high temperature in anchorage in january is 21f with a standard deviation of 10f, the average high temperature i honolulu in january is 80f with a standard deviation of 8 in which location would it be more unusual to have a day in january withb 57 f

Solution

A January temperature of 57° F would be more unusual in Anchorage.

This temperature is within three standard deviations (3 * 8° = 24°) of the mean (80°) in Honolulu [56 to 104]

but is outside the range of three standard deviations (3 * 10° = 30°) of the mean (21°) in Anchorage. [-9 to 51]